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MrMuchimi
3 years ago
10

Which changes occur when Pt2+ is reduced?

Chemistry
2 answers:
Tomtit [17]3 years ago
6 0

Answer: Option (2) is the correct answer.

Explanation:

When an element or compound gain electrons then this means the element is undergoing reduction.

Also, in reduction oxidation number of the element decreases.

For example, Pt^{2+} + 1e^{-} \rightarrow Pt^{+1}

Thus, we can conclude that the Pt^{2+} gains electrons and its oxidation number decreases.

skad [1K]3 years ago
3 0
The correct answer is option 2. When Pt2+ is reduced it loses electrons, oxidizing it. The oxidation number is the charge of the atom. Adding an electron, decreases the net charge consequently the oxidation number.
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8 mins and 20 seconds i think

Explanation:

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2 years ago
Which of these reactions can be classified as double replacement reactions?
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1) Zn + 2 HCl = ZnCl2 + H2 ( <span>single replacement )

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4 0
3 years ago
What is the main difference between protons and neutrons?
Lorico [155]

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8 0
3 years ago
ΔG o for the reaction H2(g) + I2(g) ⇌ 2HI(g) is 2.60 kJ/mol at 25°C. Calculate ΔG o , and predict the direction in which the rea
kondaur [170]

Answer:

The reaction is not spontaneous in the forward direction, but in the reverse direction.

Explanation:

<u>Step 1: </u>Data given

H2(g) + I2(g) ⇌ 2HI(g)     ΔG° = 2.60 kJ/mol

Temperature = 25°C = 25+273 = 298 Kelvin

The initial pressures are:

pH2 = 3.10 atm

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pHI 1.75 atm

<u>Step 2</u>: Calculate ΔG

ΔG = ΔG° + RTln Q  

with ΔG° = 2.60 kJ/mol

with R = 8.3145 J/K*mol

with T = 298 Kelvin

Q = the reaction quotient → has the same expression as equilibrium constant → in this case Kp = [p(HI)]²/ [p(H2)] [p(I2)]

with pH2 = 3.10 atm

pI2 = 1.5 atm

pHI 1.75 atm

Q = (3.10²)/(1.5*1.75)

Q = 3.661

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ΔG =5815.43 J/mol = 5.815 kJ/mol

To be spontaneous, ΔG should be <0.

ΔG >>0 so the reaction is not spontaneous in the forward direction, but in the reverse direction.

4 0
3 years ago
What are the products when ammonia (NH3) decomposes according to this equation?<br> NH3
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7 0
2 years ago
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